The chapter I read was on the sin of sloth. Backus address the psychological, spiritual, and moral dimensions of depression as it relates to the "deadly sin" of sloth. I found it to be balanced, biblical, and historically grounded in that the author refers to spiritual doctors of the church who have addressed matters of sin and righteousness in the Christian life. He also used a case study to illustrate how "telling ourselves the truth" about our situations and God's character leads to spiritual liberation. This is the main theme of Dr. Backus's works over the years.
The book addresses "the seven deadly sins" and how to overcome them in the Christian life. From what I read in the excerpt, and from what I have read before, I'm sure this is a fine book. I plan to get it and read it soon. Maybe I'll give another review then.
Douglas Groothuis